EP0910782B1 - Rohrpositionierungsmechanismus für automatische handfeuerwaffen - Google Patents

Rohrpositionierungsmechanismus für automatische handfeuerwaffen Download PDF

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Publication number
EP0910782B1
EP0910782B1 EP97906063A EP97906063A EP0910782B1 EP 0910782 B1 EP0910782 B1 EP 0910782B1 EP 97906063 A EP97906063 A EP 97906063A EP 97906063 A EP97906063 A EP 97906063A EP 0910782 B1 EP0910782 B1 EP 0910782B1
Authority
EP
European Patent Office
Prior art keywords
barrel
positioning bar
slide
frame
positioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97906063A
Other languages
English (en)
French (fr)
Other versions
EP0910782A1 (de
Inventor
Sylvain Dionne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SNC Technologies Inc
Original Assignee
SNC Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SNC Technologies Inc filed Critical SNC Technologies Inc
Priority to PT97906063T priority Critical patent/PT910782E/pt
Publication of EP0910782A1 publication Critical patent/EP0910782A1/de
Application granted granted Critical
Publication of EP0910782B1 publication Critical patent/EP0910782B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A33/00—Adaptations for training; Gun simulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/32—Energy accumulator systems, i.e. systems for opening the breech-block by energy accumulated during barrel or gas piston recoil
    • F41A5/34—Energy accumulator systems, i.e. systems for opening the breech-block by energy accumulated during barrel or gas piston recoil with spring accumulators

Definitions

  • This invention relates to the field of firearms and provisions for modifying semi-automatic firearms for training purposes.
  • it relates to the positioning of barrels to ensure reliable chambering in blow-back firearms that have been modified to fire low-energy ammunition.
  • An advantage of the low-energy training ammunition is that it has a shorter range and lower penetration capacity than standard ammunition. This permits use of smaller, less secure firing ranges as training facilities. If standard ammunition were accidentally employed in these facilities, unexpected dangers would arise from the increased striking power and range of standard ammunition.
  • the weapon modifications required to permit cycling while firing low-energy training ammunition generally include replacing or modifying the barrel and sometimes replacing or adding one or two other components, depending on the weapon involved. These modifications also serve to increase safety.
  • the caliber of the substitute barrel may be made smaller than the diameter of the projectiles of standard 9 mm ammunition. Then, if an attempt is made to chamber a standard round in such a training-adapted firearm, the barrel will not normally admit entry of the standard projectile. This ensures that such modified weapons cannot fire standard, live ammunition.
  • the low-energy cartridge represented by United States Patent No 5,359,937 in combination with a substitute training barrel, allows normal recoil and cartridge case ejection through a blow-back action.
  • a locking mechanism couples the slide and barrel together for the first portion of the recoil, and then releases the slide. Upon the unlocking of the barrel from the slide, the slide continues its rearward travel while the barrel stops in the proper position to receive the next round from the magazine to be chambered.
  • a training barrel of the type addressed by the invention is similar in most aspects to the standard barrel for a particular breech-locked pistol but is modified, in part, by removing the locking mechanism that holds the barrel and slide together for the first portion of the recoil cycle.
  • This invention is directed to an automatic pistol adapted to fire low-energy training ammunition by the substitution of a training barrel that omits the breech-lock feature normally present. It provides a system for the positioning of the barrel for reloading by adding a spring-loaded device to the bottom of the training barrel which, upon firing, positively moves the barrel rearward to its required position for receiving the next cartridge from the magazine in a manner which is completely independent from the motion of the slide. Without this barrel positioning mechanism, the barrel would be too far forward from the top of the magazine and the incoming cartridge would not necessarily enter the chamber cleanly, hence provoking a weapon jam whenever such misalignment should occur.
  • a firearm is provided with a slide and a barrel which at no time are locked together during the firing cycle.
  • the barrel is provided with a spring-loaded positioning bar which serves as a barrel positioning device.
  • This positioning bar with its associated spring is mounted on the barrel, allowing free longitudinal movement between the bar and the barrel.
  • some barrel designs include protrusions in the form of spaced lugs on the barrel, and the positioning bar and spring may be carried by two of the barrel lugs.
  • the positioning bar abuts at its forward end the barrel locking pin or some other suitable anchor point in the frame of the weapon.
  • the barrel positioning spring is at maximum compression because the slide has pushed the barrel to its farthest forward position during chambering of the low-energy cartridge to be fired.
  • the slide recoils without pulling the barrel back with it. Even though there is nothing obstructing rearward movement of the barrel, because the two pieces (slide and barrel) are not locked together, the barrel would normally not move rearwardly without the barrel positioning mechanism of the invention being present. Rearward motion of the barrel is effected by the barrel positioning mechanism as it bears on the barrel locking pin, its spring force being expressed in the rearward direction.
  • One way of attaching the barrel positioning mechanism to the barrel is by providing a seating pin at the forward face of the rear lug of the barrel and seating one end of the barrel positioning spring over the seating pin. The other end of the positioning spring is attached to the positioning bar.
  • a groove in the adjacent, forward barrel lug receives and embraces the positioning bar.
  • the forward barrel lug will move longitudinally over the positioning bar, which is held in the groove by a lateral pin which passes through an elongated slot in the bar and is fixed to the forward lug.
  • the travel of the barrel is delimited by this pin- and-slot arrangement in the positioning bar, which ensures, through the length of the slot and the location of the lateral pin relative to the back face of the barrel, that the barrel is in the correct position to receive the next round to be chambered when the slide returns to close the breech.
  • the subject training barrel after being properly positioned rearwardly by the barrel positioning device, does not need to be continually held in place during the entire chambering of the next cartridge to be fired.
  • the barrel may commence to move forward as soon as the tip of the projectile begins to enter the chamber. This forward movement may occur because the spring in the barrel positioning device is extended after pushing the barrel rearward and presents no appreciable resistance to forward barrel movement under the influence of the returning slide. This is in contrast to the prior art design of Anthony, which describes a much stronger detent mechanism to hold the barrel in place "until a cartridge has been successfully chambered".
  • the barrel positioning spring must be of sufficient length and strength that it will be held in compression by the force of the spring or springs driving the slide, when the barrel is in its forward position prior to firing.
  • the mechanical characteristics of the barrel positioning spring in compression must be such that this spring will be capable of readily lengthening from its compressed state to move the barrel positively back to the required position for receiving the next round, as determined by the pin and slot arrangement after the slide recoils.
  • the barrel positioning spring remains only partially expanded after rearward movement of the barrel ceases so that the barrel will not move forward again until the slide of the weapon commences to chamber the next cartridge.
  • the strength of the spring in the barrel positioning device is much less than the strength of the spring or springs associated with the slide so that the motion of the slide will not be impeded as it returns to close the breech and push the barrel forward in preparation for firing of the next cartridge. In doing so, this action of the slide recompresses the barrel positioning spring, readying it for the next cycle.
  • Figure 1 is a partially cutaway, cross-sectional side-view of a prior art pistol ready to fire standard 9mm ammunition (only the barrel, slide, locking mechanism, part of the frame and part of the magazine are shown).
  • Figure 2 is the same side-view cross-section of the same pistol as in Figure 1 except that it now contains a training barrel, complete with the barrel positioning mechanism, and is ready to fire low-energy ammunition as represented by United States Patent No 5,359,937.
  • the spring in the barrel positioning device is at maximum compression.
  • Figure 3 is a partial cross-section through a barrel lug and the pistol frame of the pistol of Figure 2.
  • Figure 4 shows the pistol of Figure 2 after firing with the slide in its most rearward position, ready to be moved forward by the slide recoil spring or springs (not shown).
  • the spent case from the cartridge of Figure 2 after firing has been ejected from the weapon and the next cartridge from the magazine is in position to be chambered by the returning slide.
  • FIG 1 a prior art 9 mm pistol is shown having a barrel 1 with lugs 5, 5A, slide 2, a normal barrel-slide locking mechanism 3 with piston 7, frame 6 with barrel locking pin 4 and magazine 9, and standard 9 mm service ammunition 8.
  • this pistol is converted to fire low-energy ammunition as represented by United States Patent No 5,359,937, barrel 1 is replaced by training barrel 10, as shown in Figure 2.
  • Training barrel 10 differs from prior art barrel 1 in that the barrel-slide locking mechanism 3 with piston 7 is replaced by barrel positioning mechanism 11 consisting of barrel positioning bar 11A with slot 11E, spring 11B, spring seating pin 11C, and transverse pin 11D.
  • barrel positioning bar 11A is rectangular, it could also be circular or some other shape.
  • the rearward end of spring 11B is mounted on seating pin 11C, which is attached to lug 5A, pointing forwardly.
  • the other, forward end of positioning spring 11B is attached to positioning bar 11A, around which groove 13 in lug 5 is free to move longitudinally and parallel to the barrel.
  • the forward end of positioning bar 11A abuts against barrel locking pin 4 on the frame 6, thereby immobilizing positioning bar 11A with respect to the frame 6 during the firing cycle. This forward end may be curved to mate intimately with the surface of the barrel locking pin 4.
  • Positioning bar 11A is held in groove 13 by transverse pin 11D in slot 11E.
  • Pin 11D is anchored in lug 5, hence both move with the same motion as the training barrel 10.
  • the location of pin 11D and the length and location of slot 11E are such that the stroke of pin 11D is sufficient to allow movement of training barrel 10 rearward, after firing of the weapon, to its proper position for chambering of the next cartridge to be fired.
  • positioning spring 11B Rearward movement of training barrel 10 from its forward position at the moment of firing is effected by positioning spring 11B, which is in compression at the time of firing. Since positioning bar 11A does not move because it is abutted against barrel locking pin 4, positioning spring 11B is constrained to expand rearward only. As soon as the slide 2 begins to move rearward, thereby leaving training barrel 10 unfettered and presenting no impediment to barrel motion because the two components are not locked together, the rearward-directed force provided by compressed positioning spring 11B pushes training barrel 10 rearwardly until brought to a stop at the desired position by transverse pin 11D arriving at the rearward end of slot 11.
  • the functioning of the subject barrel positioning device has been tested many hundreds of times in Walther P-5 pistols with complete success and reliability.
  • the barrel positioning device of the invention is particularly suited for training barrels for such 9 mm automatic pistols as the Walther P-5, Walther P-38, Beretta 92 and Beretta 96, but may also be applicable to other automatic firearms that fire low-energy ammunition as represented by United States Patent N° 5,359,937 or other type of low-energy ammunition, including blanks.

Claims (9)

  1. Übungs-Lauf für eine automatische Feuerwaffe, folgendes umfassend:
    (1) einen Lauf (10) mit einer Mittelachse;
    (2) eine erste Sitzerhebung (5A), welche sich vom Lauf (10) erhebt, um einen Anschlag für eine Positionierungsfeder (11B) zur Verfügung zu stellen;
    (3) eine zweite, mit einer Nut versehene Führungserhebung (5), welche sich vom Lauf (10) erhebt, um eine Laufpositionierungsschiene (11A) zu tragen und zu führen;
    (4) eine Laufpositionierungsschiene (11A), welche innerhalb und fluchtend mit der Nut (13) in der Führungserhebung (5) derart angeordnet ist, daß die Erhebung (5) über die Laufpositionierungsschiene (11A) gleiten kann und eine Rückwärtsbewegung des Laufes (10) relativ zur Positionierungschiene (11A) erlaubt;
    gekennzeichnet durch,
    (5) eine Laufpositionierungsfeder (11B), welche mit ihrem rückwärtigen Ende an der Sitzerhebung (5A) anschlägt und mit ihrem vorderen Ende mit der Laufpositionierungsschiene (11A) verbunden ist, um die Sitzerhebung (5A) von der Positionierungschiene (11A) weg zu drükken; und
    (6) ein Bewegungsbegrenzungsmittel (11D), zum Begrenzen der Bewegung der Führungserhebung (5) relativ zur Positionierungschiene (11A),
    wobei der Lauf (10) auf eine gleitende Bewegung relativ zur Positionierungschiene (11A) in eine Richtung parallel zur Achse des Laufes (10) begrenzt ist.
  2. Übungs-Lauf gemäß Anspruch 1, dadurch gekennzeichnet, daß das Bewegungsbegrenzungsmittel einen länglichen Schlitz (11E) umfaßt, welcher in der Positionierungsschiene (11A) ausgebildet und von einem Querstift (11D) durchstochen ist, dessen beide Enden an der zweiten Führungserhebung (5) befestigt sind.
  3. Übungs-Lauf nach Anspruch 1 oder 2 in Verbindung mit einer Waffe, welche einen Schlitten (2) aufweist, der rückwärts relativ zum Lauf (10) frei beweglich ist und wobei der Lauf innerhalb der Waffe beim Abfeuern rückwärts frei beweglich ist.
  4. Feuerwaffe, folgendes umfassend:
    (1) einen Rahmen (6);
    (2) einen Lauf (10) mit einer Mittelachse, wobei der Lauf auf dem Rahmen (6) derart befestigt ist, daß der Lauf (10) gleitend relativ zum Rahmen (6) in Richtung der Mittelachse verschiebbar ist;
    (3) einen Schlitten (2), welcher auf dem Rahmen (6) frei für eine gleitende Verschiebung unabhängig vom Lauf (10) in Richtung der Mittelachse ausgehend von einer Magazinposition bewegbar ist, wenn der Schlitten (2) am Lauf (10) anliegt;
    (4) elastische Mittel, welche den Schlitten vorwärts in Richtung der Magazinposition drücken;
    gekennzeichnet durch
    (5) elastische Mittel, welche zwischen dem Rahmen (6) und dem Lauf (10) angeordnet sind, um den Lauf rückwärts zu drücken, wenn der Schlitten (2) rückwärts von der Magazinposition weg verschoben wird.
  5. Feuerwaffe nach Anspruch 4, dadurch gekennzeichnet, daß diese ferner ein Bewegungsbegrenzungsmittel (11D) zum Begrenzen der Bewegung des Laufes (10) relativ zum Rahmen (6) aufweist.
  6. Feuerwaffe nach Anspruch 4, dadurch gekennzeichnet, daß diese ferner eine Laufpositionierungsfeder (11B) und eine Laufpositionierungsschiene (11A) aufweist, welche mit dem Lauf (10) verbunden ist, wobei die Positionierungsfeder (11B) mit ihrem rückwärtigen Ende am Lauf (10) und mit ihrem vorderen Ende am rückwärtigen Ende der Positionierungsschiene (11A) anschlägt, wobei das vordere Ende der Positionierungsschiene (11A) mit dem Waffenrahmen (6) in Kontakt ist, wodurch der Lauf (10) zur rückwärtigen Verschiebung relativ zum Rahmen (6) vorgespannt ist.
  7. Feuerwaffe nach Anspruch 6, dadurch gekennzeichnet, daß diese ferner folgendes aufweist, Bewegungsbegrenzungsmittel, zum Begrenzen der Verschiebung des Laufes (10) relativ zum Rahmen (6), wobei das Bewegungsbègrenzungsmittel einen Schlitz (11E), welcher in der Laufpositionierungsschiene (11A) ausgebildet ist, und einen Querstift (11D), welcher durch den Schlitz greift und relativ zum Lauf (10) fixiert ist, aufweist.
  8. Feuerwaffe nach wenigstens einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß diese eine Kammer innerhalb des Laufes und eine innerhalb der Kammer angeordnete Patrone aufweist, wodurch beim Abfeuern die Patrone eine rückwärtige Bewegung des Schlittens in einer Rückstoßbewegung bewirkt.
  9. Feuerwaffe nach Anspruch 8, dadurch gekennzeichnet, daß die Patrone eine Niedrigenergie-Übungspatrone ist, welche zum Abfeuern eines Projektils mit niedriger Masse ausgebildet ist.
EP97906063A 1997-03-14 1997-03-14 Rohrpositionierungsmechanismus für automatische handfeuerwaffen Expired - Lifetime EP0910782B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PT97906063T PT910782E (pt) 1997-03-14 1997-03-14 Mecanismo de posicionamento do cano para armas de fogo automaticas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA1997/000174 WO1998041809A1 (en) 1997-03-14 1997-03-14 Barrel positioning mechanism for automatic firearms

Publications (2)

Publication Number Publication Date
EP0910782A1 EP0910782A1 (de) 1999-04-28
EP0910782B1 true EP0910782B1 (de) 2002-08-07

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Application Number Title Priority Date Filing Date
EP97906063A Expired - Lifetime EP0910782B1 (de) 1997-03-14 1997-03-14 Rohrpositionierungsmechanismus für automatische handfeuerwaffen

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EP (1) EP0910782B1 (de)
DE (1) DE69714592T2 (de)
WO (1) WO1998041809A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7225741B2 (en) 2004-01-22 2007-06-05 Pdt Tech, Llc Reduced energy training cartridge for self-loading firearms
US7278358B2 (en) 2004-01-22 2007-10-09 Pdt Tech, Llc. Non-lethal marking bullet for related training cartridges

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4907489A (en) * 1988-08-31 1990-03-13 The United States Of America As Represented By The United States Department Of Energy Blank fire configuration for automatic pistol
DE4109777A1 (de) * 1991-03-25 1992-10-01 Heckler & Koch Gmbh Vorrichtung zur geschossartigen beschleunigung von gegenstaenden, insbesondere verriegelte selbstladeschusswaffe
US5433134A (en) * 1993-10-05 1995-07-18 Leiter; Edward J. Blank firing conversions for semiautomatic pistols
DE4341131C1 (de) * 1993-12-02 1995-02-02 Heckler & Koch Gmbh Schußwaffe mit Rückstoßabpufferung, insbesondere Faustfeuerwaffe

Also Published As

Publication number Publication date
EP0910782A1 (de) 1999-04-28
DE69714592D1 (de) 2002-09-12
WO1998041809A1 (en) 1998-09-24
DE69714592T2 (de) 2003-10-09

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